The question was whether or not it makes sense to make email services as secure as possible and prefer more secure email providers to less secure ones.
Some say we should give up making email more secure, because it can never be as secure as more modern messaging services.
That doesn't make sense to me, because we don't have a choice other than to use email in ways that require very high levels of security. I cannot behave as if my email could become public any moment.
I would love if the world were to move on to more secure messaging platforms. But it's simply not the world we live in right now.